can you just call up the ATF and ask for a copy of the records regarding a firearm with X serial number in relation to Mr. Y? It seems in my grand parents estate there is a SBS and in my grandfather's hand written notes there is mention of a tax pay to the "department of alcohol." However they actual tax stamp has yet to be found. So how does one proceed? Does the person in charge of the estate, provide proof of death and proof that they are in fact in charge of the estate and request a copy of the records?